Fan for paper driers



w. E. BADLE FAN FOR PAPER DRIERS 4 May 4 1926.

Filed May 19. 1924 2 Sheets-Sheet 1 Patented May 4, 1926.

UNITED STATES PATENT OFFICE.

WARREN E. IBEADLE, OF WISCONSIN RAPIDS, WISCONSIN, ASSIGNOR TO'BELOIT IRON WORKS, A. CORPORATION OF WISCONSIN.

FAN FOR PAPER DRIERS.

Application filed May 19, 1924. Serial No. 714,229.

To all whom it may concern.

Be it known that I, WARREN E. BEADLE,

. a citizen of the United States, and a resident of the city of Wisconsin Rapids, in the county of Wood and State of \Visconsin, have invented certain new and useful Improvements in Fans for Paper Driers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of ref erence marked thereon, which form a part of this specification.

In paper making machines. the heavy saturated air in the driers is more or less dead and acts to retard the drying of the paper. There have been various schemes tried out for the purpose of producing a circulation through/the paper machine drying cylinders to remove the heavy saturated air, but not any of said schemes has proven entirely satisfactory.

This invention relates to a simple and inexpensive arrangement wherein the circulation through the drying cylinders of a paper making machine is improved by the ad dition of fans used on the driving gears of the drying cylinders and by the addition of a hood or baffle positioned over the paper machine within the machine room.

It is an object of this invention to provide an improved circulation of the saturated air between the drying cylinders of a paper makin machine by providing the drying cylin er gears with fan blades.

It is also an object of this invention to provide a method of withdrawing moisture laden vapors from between paper machine dryers by equipping the drying cylinder gears with ventilators for drawinlg1 hot alr from beneath a hood, between t e cylinders and out of the machine room with the aid of an exhaust fan. 7 v i It is an important-object of the invention to provide a simple improved inexpenslve arrangement for withdrawing saturated air from between the drying cylinders of a paper makin machine by providing ventilators operab e from the machine to withdraw.

the saturated air and permit the circulation of hot air or dry air through the machine room and between the drying, cylinders.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure *1 is a transverse vertical section through a machine room and illustrating the circulation of air through the drying machines by means of arrows.

Figure 2 is a fragmentary side elevation of a portion of the Fourdrinier unit of a paper making machine showing the cylinder driving gears equipped with fan blades.

Figure 3-is a fragmentary top plan View of the portion of the machine illustrated in Figure 2 and showing one of the gears in section.

As shown on the drawings:

The reference numeral 1 indicates a machine room havin a oupola or tower 2 on the roof thereof 1n which an exhaust fan 3 is mounted. A hood or baflie 4 is supported within the machine room above the drying sections of two paper making machines positioned side by side. Hot air supply pipes 5 are supported within the machine room 1 and are connected with any suitable source of supply.

Inlet pipes 6 project from the supply pipes 5 into openings in the sides of the hood 4 above the topsof the paper making machines. Each of the paper making machines briefly comprises a framework 7 having a plurality of drying cylinders 8 provided with trunnions 9 and 10, which are journalled in bearings, on the machine frame. Driving gears 11 are supported on the trunnions 10 and are connected to be driven from any suitable source of power to cause rotation of the drying cylinders.

Integrally formed or rigidly secured on alternate spokes of each of the cars 11 are fan blades 12. While the fan b ades are illustrated and described as'being mounted on alternate spokes of the gears, it will 01 course be understood that any number of fan blades may be provided and mounted in any desired position on the gears 11 to cause the necessary circulation of saturated air between the drying c linders 8.

'Ihe hood 4 an t e two paper making machines divide the interior of the machine 1 ber 13 below the hoodand between the two machines, side chambers 14, and an upper outlet chamber 15 above --the-hood 4. The outlet chamber 15 communicates with the cupola' chamberwithin which the'exhaust fan 3 is mounted.

When the paper making machines are 0 erating hot air or dry air is supplied from t e supply pipes 5 and the auxiliary pipes.

6 to the chamber 13. Due to the action of the fan blades on the rotating gears 11, the hot air is drawn between the cylinders 8 of, each machine and is directed as indicated by the arrows from the chamber 13 outwardly to the two side chambers 14 and then upwardly into the upper chamber 15. The

action of the exhaust fan 3 in the cupola serves to exhaust the heavy saturated air from the machine room.

The fan blades on the gears 11 thus afford a simple and inexpensive means whereby the heavy saturated air, resulting from the drying of paper, is drawn from between the drying cylinders and exhausted, thereby permitting a constant supply of hot or dry air to be circulated in the machine room. I

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

1. The combination with paper making machine drying cylinders and the driving gears thereof, of means carried by the gears to create a circulation of air between said cylinders.

2. In a paper making machine the combination with the drying cylinders thereof, of

means for driving the same and also. causing a circulation of air between said cylinders.

3. The combinatidn with a machine room and paper making machines therein, of dry-- ing cylinders forming a part of said machines, gears for driving said cylinders, and members mounted on said gears for causing a circulation of air through the machine room and between said cylinders.

4. The combination with a machine room and paper making machines therein, of drylng cylinders forming a part of said mathe machines, drying cylinders forming a part of the paper making machines, gears for driving the cylinders, hot air pipes for supplying the machine room with hot air, and fan blades carried by said gears to'cause a circulation of the hot air between said cylinders and over said hood with the aid of the exhaust fan.

6. In a drier section of a paper making machine, means for removing the vapors generated therein consisting of fan elements fasof such size as to occupy one entire side of the mach1ne, thus adapted to move a column of air uniformly through said machine- 7. In a paper making machine, rolls journaled transversely of the machine, driving gears fixed to the shafts of-- said rolls, and

fan elements carried by said gears adapted to exhaust the air between said rolls.

8. In a paper making machine, an apertured frame in each side of the machine, rolls journaled transversel' of the machine between said frames, A the shafts of said rolls, and fan, elements carried by said gears adapted to exhaust the air between said rolls.

riving gears fixed to,

9. In a paper making machine, rollsjour- I naled transversely of the machine, driving gears fixed to the shafts of said rolls, a hood over said rolls, and fan elements occupying substantially the entire space at one side of said machine and below said hood, thus adapted to remove the entire-column of air thereunder past said rolls. 4

In testimony whereof I have hereunto subscribed my name.

WARREN E. BEADLE.

75 tened to each of the drier rolls and being 

